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Thu, 06 Jun 2024 00:42:40 -0700 (PDT) Received: from localhost ([102.222.70.76]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a6c806ebc43sm57149266b.141.2024.06.06.00.42.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Jun 2024 00:42:39 -0700 (PDT) Date: Thu, 6 Jun 2024 10:42:35 +0300 From: Dan Carpenter To: Joy Chakraborty Cc: Srinivas Kandagatla , Greg Kroah-Hartman , AngeloGioacchino Del Regno , Lars-Peter Clausen , Sakari Ailus , Bingbu Cao , Zhihao Cheng , Jerome Brunet , Martin Blumenstingl , linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-media@vger.kernel.org, linux-i2c@vger.kernel.org, linux-gpio@vger.kernel.org, linux-mtd@lists.infradead.org, linux-rtc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-usb@vger.kernel.org, manugautam@google.com Subject: Re: [PATCH v1 01/17] hwmon: pmbus: adm1266: Change nvmem reg_read/write return type Message-ID: <08ff07f4-034d-4342-89da-d83044871ab1@moroto.mountain> References: <20240605175953.2613260-1-joychakr@google.com> <20240605175953.2613260-2-joychakr@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240605175953.2613260-2-joychakr@google.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240606_004249_936599_2C550875 X-CRM114-Status: GOOD ( 18.17 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org On Wed, Jun 05, 2024 at 05:59:45PM +0000, Joy Chakraborty wrote: > Change nvmem read/write function definition return type to ssize_t. > > Signed-off-by: Joy Chakraborty > --- > drivers/hwmon/pmbus/adm1266.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/hwmon/pmbus/adm1266.c b/drivers/hwmon/pmbus/adm1266.c > index 2c4d94cc8729..7eaab5a7b04c 100644 > --- a/drivers/hwmon/pmbus/adm1266.c > +++ b/drivers/hwmon/pmbus/adm1266.c > @@ -375,7 +375,7 @@ static int adm1266_nvmem_read_blackbox(struct adm1266_data *data, u8 *read_buff) > return 0; > } > > -static int adm1266_nvmem_read(void *priv, unsigned int offset, void *val, size_t bytes) > +static ssize_t adm1266_nvmem_read(void *priv, unsigned int offset, void *val, size_t bytes) > { > struct adm1266_data *data = priv; > int ret; > @@ -395,7 +395,7 @@ static int adm1266_nvmem_read(void *priv, unsigned int offset, void *val, size_t > > memcpy(val, data->dev_mem + offset, bytes); > > - return 0; > + return bytes; > } This breaks the build so it's not allowed. The way to do it is to: 1) add a new pointer which takes a ssize_t 2) convert everything to the new pointer 3) Rename the new pointer to the old name regards, dan carpenter ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/